A “Sumikko Gurashi: The Kingdom in the Sky and the Two Little Ones” quest rally will be held from September 15 to October 14, 2026, at the Dai-Nagoya Building, which is directly connected to Nagoya Station. Participants will use their smartphones and the LINE Storyteller to navigate from B1 to the 5th floor and tackle five quests. An original merchandise pop-up store and photo spots will also be available during the event.